二甲醚-二氧化碳-甲醇-水体系闪蒸过程实验与模拟计算  

Experiment and simulation calculation of flash process for DME-CO_2-CH_3OH-H_2O system

作　　者：韩媛媛[1,2] 张海涛[1] 应卫勇[1] 房鼎业[1] 

机构地区：[1]大型工业反应器工程教育部工程研究中心华东理工大学化学工程联合国家重点实验室,上海200237 [2]华侨大学化工系,福建泉州362021

出　　处：《现代化工》2008年第10期57-60,共4页Modern Chemical Industry

基　　金：“十一五”国家科技支撑计划(2006BAE02B02);国家“973”计划项目(2005CB221205)

摘　　要：对二甲醚-二氧化碳-甲醇-水体系闪蒸过程进行了实验研究和模拟计算。结果显示,进入闪蒸罐中的细小呈针形的出口管口结构有利于料液雾化,使气、液相尽快趋于平衡。对于体系宽沸程以及液相非理想性的特点,采用了合适的计算迭代次序和相应的迭代公式,模型计算值与实验结果吻合较好,最大相对误差的绝对值小于18.5%。模拟计算显示使原料液中二甲醚较少损失、二氧化碳尽可能多地逸出的适宜闪蒸操作压力不大于0.3 MPa、闪蒸温度在50℃左右。Experimental research and simulation calculation of flash process for DME-CO2-CH3OH-H2O system are performed. The results show that the outlet pipe orifice is suitable tO make feed liquid atomized, so that equilibrium between gas and liquid phase can quickly reach. Considering the characteristics of wide-boiling range and non-ideal in liquid phase, the proper iterated sequence and equations are introduced and adopted. The calculation values coincide well with experimental measurements and the absolute value of maximum relative error is less than 18.5%. The model calculation indicates that the appropriate operating conditions are pressure not more than 0.3 MPa and temperature, 50℃or so in order to make DME loss reduced.

关 键 词：二甲醚 闪蒸 模拟计算 

分 类 号：TQ028.61[化学工程] TQ413.23